| IMIesi Mo Champs Landfill | Maryland Heights | — | ◐ LIKELY ACTIVE |
| PCPolynt Composites USA INC | Valley Park | — | ◐ LIKELY ACTIVE |
| JSJd Streett & CO | Saint Louis | — | ◇ UNVERIFIED |
| AQAntire Quarry | Eureka | — | ◐ LIKELY ACTIVE |
| BSBi State Emmulsion | Saint Louis | — | ◐ LIKELY ACTIVE |
| CSCentral Stone Company-north Quarry | Florissant | — | ◐ LIKELY ACTIVE |
| ELEngineered Lubricants | Maryland Heights | — | ◐ LIKELY ACTIVE |
| SCSimpson Construction Materials LLC Valley Park | Valley Park | — | ◐ LIKELY ACTIVE |
| FWFred Weber - North Stone | Maryland Heights | — | ◐ LIKELY ACTIVE |
| ARAmerican Ready Mix-bussen Road | Saint Louis | — | ◇ UNVERIFIED |
| FWFred Weber Inc-portable Asphalt Plant | Maryland Heights | — | ◇ UNVERIFIED |
| FWFred Weber INC (south Quarry) | Saint Louis | — | ◇ UNVERIFIED |
| NFNew Frontier Materials | Florissant | — | ◇ UNVERIFIED |
| NFNew Frontier Materials Operations Alpha LLC South Asphalt Batch | Saint Louis County | — | ◇ UNVERIFIED |
| PCPace Construction Co-pace Construction CO | Saint Louis | — | ◇ UNVERIFIED |
| PSPennzoil-quaker State Company (dba Sopus Products) (no Longer Subject to Frp) | Maryland Heights | — | ◇ UNVERIFIED |
| SASpirit Asphalt INC - Hazelwood | Hazelwood | — | ◇ UNVERIFIED |
| WLWest Lake Quarry & Material | Bridgeton | — | ◇ UNVERIFIED |
| WIWolco, INC. | Saint Louis | — | ◇ UNVERIFIED |
| MAMcConnell and Associates - STL | Saint Louis | 20–99 | ◐ LIKELY ACTIVE |
| BBBusy Bee Paving | Saint Louis | — | ◇ UNVERIFIED |
| FMFederal Mogul Friction Prods | Berkeley | — | ◇ UNVERIFIED |
| GCGulf Coast Asphalt LLC | Saint Louis | — | ◇ UNVERIFIED |
| MAMissouri Asphalt Products, LLC West Lake Quarry Material CO | Bridgeton | — | ◇ UNVERIFIED |
| MPMissouri Petroleum Products Company | Saint Louis | — | ◇ UNVERIFIED |
| PCPace Construction Co-chesterfield | Chesterfield | — | ◇ UNVERIFIED |
| PCPace Construction CO - Fort Belle Quarry | Florissant | — | ◇ UNVERIFIED |
| QEQuickheet Energy & P | Chesterfield | — | ◇ UNVERIFIED |
| SHSurmeier Holdings LLC | St. Louis | — | ◇ UNVERIFIED |
| TBTamko Building Products LLC | Fenton | — | ◇ UNVERIFIED |
| TTpsa | Fenton | — | ◇ UNVERIFIED |
